Which is the missing tile?

Brain Workout: Variety Puzzles to Boost Your Memory and Brainpower

Answer:

A: each line across and down contains five black dots and four white dots.

Brain Workout: Variety Puzzles to Boost Your Memory and Brainpower

We can improve our brainpower considerably. This improvement happens by strengthening and making new connections between the neurons of our brain. More connections and stronger connections boost our brainpower and strengthen our performance on mental and physical activities. More precisely, stronger and more connections between neurons boost the cognitive functions of the brain, such as memory, attention, and reasoning. A brain with better cognitive functioning will have a higher capacity to learn and process; this fact in turn may mean a more “intelligent” brain.

Studies have shown that puzzles, and mental exercises in general, improve brainpower by stimulating the diverse regions of our brain, by stimulating creativity, imagination, and analytical, rational, and logical areas. This type of stimulation is one of the main ways to strengthen the existing connections between neurons and produce new connections. In many sources for brainpower improvement, the analogy has been made that as gymnasts can enhance their performance by more training and practice, people can enhance their brainpower by mental gymnastics provided by puzzles and brain games.

Using this book, which contains 220 puzzles and brain games, you can improve your mental functions, including memory, attention, speed, problem solving, and the verbal, numerical, and spatial capabilities of your brain, while entertaining yourself. The puzzles and games in this book are developed along a variety of different themes and styles and range in difficulty level and challenge. You will find it interesting and easy to complete in a fairly short time rather than  a boring mental exercise book that readers never complete.

Even though this book is primarily designed to challenge you in different ways in order to improve your memory and your brain aptitudes and abilities, it is also intended as a fun and entertaining collection to use at your leisure.

To get better results toward the book’s primary targets, you may want to solve its puzzles and perform the exercises on a regular daily schedule, accomplishing at least ten items a day. In order to improve your brainpower with this book, the most important factor for a tangible achievement is that each puzzle and game should be accomplished within the time limit indicated; for example, if you are asked to solve a puzzle in thirty seconds, then you should diligently try to solve it in no more than thirty seconds. Please note that if you conscientiously try but cannot solve a puzzle in the given time, you should not consider this a failure but still a gain, as the brain has exercised a challenge by trying its best, and that makes it stronger.

Brain Workout: Variety Puzzles to Boost Your Memory and Brainpower